$OpenBSD: patch-modules_sipcapture_sipcapture_c,v 1.3 2012/09/15 12:16:18 sthen Exp $
--- modules/sipcapture/sipcapture.c.orig	Mon Jul  9 00:10:51 2012
+++ modules/sipcapture/sipcapture.c	Mon Jul  9 00:11:30 2012
@@ -48,6 +48,7 @@
 #ifndef __USE_BSD
 #define __USE_BSD  /* on linux use bsd version of iphdr (more portable) */
 #endif /* __USE_BSD */
+#include <netinet/in_systm.h>
 #include <netinet/ip.h>
 #define __FAVOR_BSD /* on linux use bsd version of udphdr (more portable) */
 #include <netinet/udp.h>
